Excavating-machine.



.Nd. 813,393. PATENTED FEB. 20, 1906.

T. H. WALKER.

EXCAVATING MACHINE.

APPLICATION FILED JUNE 26, 1905.

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amvewboz PATBNTBD FEB. 20, 1906.

T. H. WALKER. BXGAVATING MACHINE.

APPLICATION FILED JUNE 26, 1905.

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excavating-machines for use in making irri- UN ITEI) STATES PATENTenrich.

THOMAS H. WALKER, OF TUMWATER, WASHINGTON, ASSIGNOR OF ONE- FOURTH TOPHILIP H. OARLYON, OF OLYMPIA, WASHINGTON.

EXCAVATING-MAOHlNE.

Patented Feb. 20, 1906.

Application filed June 26, 1905- Serial No. 267,141.

To ail whom, it may concern.-

Be it known that I, Tr-roMAs H. WALKER, a citizen of the United States,residing at Tumwater, in the county of Thurston and State of Washington,have invented certain new and useful Improvements in ExcavatingMachines; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in gating ditches, canals, and thelike.

The object of the invention 1s to provide a simple and powerfulexcavating-machine having great capacity, so that ditching may be donequickly at a comparatlvely small exense.

With the above and other objects in View the invention consists ofcertain novel features of construction, combination, and arrangement ofdevices herein shown and described.

In the accompanying drawings, Figure l is a top plan View of my improvedexcavatingmachine. Fig. 2 is an end elevation of the same. Fig. 3 is afront elevation, and Fig. 4 is a vertical sectional view.

Referring to the drawings by numeral, 1 denotes my improvedexcavating-mach1ne, which comprises a suitable frame 2 of substantiallyrectangular form and having mounted thereon a horizontally-disposedshaft 3. Revolubly mounted upon said shaft is a large cylinder 4, whichis adapted to run upon the ground and support the said frame. Thecylinder consists of an outer cylindrical shell 5, which is connected bya spiral web 6 to a hub or sleeve 7, which sur- The spiral web 6preferably extends from one end to the other of the cylinder and isadapted to conduct the earth loosened by the plow 9 into said cylinderas the machine is drawn forwardly. The web is secured to the hub 7 andrim or shell 5 by riveting its flanges 10, as shown, and the rim orshell 5 is preferably strengthened by The plow 9 is mounted adjacent toone of the open ends of the cylinder upon an extended portion of theshaft 3, this mounting being preferably effected by pivoting thestandard or beam 13 of said plow upon said shaft, so that the plow maybe adjusted. This adjustment may be effected by means of l a screw 14,which is operated by a handwheel 15. The earth loosened by the plow isdirected into the open end of the cylinder 4 by means of a curved bladeor scoop 16, which is also pivotally mounted upon the shaft 3, as shown.This blade or scoop is adapted to be adjusted and held against the edgeof the shell of cylinder 4 by means of a screw 17, having a hand wheel18 at its outer end. Said scoop may be swung to an elevated position topermit the contents of the cylinder to be discharged, as hereinafterexplained, by means of a cable, chain, or the like 19, which is woundupon a frame or Windlass 20, as shown.

In the forward tapered portion 21 of the frame 1 is mounted acaster-wheel 22, which is adapted to support the frame and guide themachine.

The machine may be drawn along in any desired manner; but I preferablyoperate the same by attaching at its forward and rear ends cables 23 and24, which have their oppo site ends wound upon the drums (not shown) ofa suitable hoisting-engine.

The construction, operation, and advantages of the machine will bereadily understood from the foregoing description, taken in connectionwith the accompanying drawings. It will be seen that as the machine ismoved forwardly the plow 9 will cut the earth, which will be directed bythe scoop or blade 16 into the open end of the cylinder 4, and

that the spiral web within the latter will move the earth toward theopposite end of the cylinder. When it is desired to unload the cylinder,the blade 16 is swung upwardly and the machine is drawn rearwardly toreverse the movement of the drum 4, so that the spiral web will turn thematerial out of the cylinder, as will be readily understood.

Various changes in the form, proportion, and minor details ofconstruction may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A machine of the character described, comprising a suitable frame, ashaft mounted thereon, a revoluble cylinder upon said shaft, a plow atone of the open ends of said cylinder, and means for directing the earthcut by the'plow into said cylinder, substantially as described.

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2. A machine of the character described, comprising a suitable frame, ashaft thereon, a revoluble cylinder upon said shaft, and 'open at itsends, a plow at one of the open ends of the cylinder, a spiral webwithin said cylinder, and a scoo or blade for directing the material oreart cut by said plow into said cylinder, substantially as described.

3. A machine of the character described, comprising a suitable frame, ashaft thereon, a revoluble cylinder upon the said shaft,a spiral Webwithin said cylinder, a plow mounted at one of the open ends of saidcylinder, means for adjusting said plow, a scoop or blade adapted todirect the earth cut by said plow into said cylinder, and means foradjusting said scoop or blade, substantially as described.

4. A machine of the character described,

com rising a suitable frame, a shaft mount- 20 said cylinder, a screwfor raising and lowering said plow, a swinging scoop or blade adapte todirect the earth cut by said plow into said cylinder, means forelevating said scoop or wing to permit the earth within said cylinder tobe discharged and a caster-wheel at the front of said frame,substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

THOMAS H. WALKER. Witnesses:

EDWIN R. KNIGHT, R. E. EASTMAN.

